Guido is an application for arts and culture materials, specifically music, about staff notation. This application explains the definition, types, and forms of staff notation. Furthermore, this application features games where students can combine the staff notes to match the required beat. To measure student abilities, there are evaluation questions that must be completed by students. The material in this application is the work of the mentored teacher, Mrs. Yulida Nur Fajriani from SMPN 2 Penajam Paser Utara.